1TDQ

Structural basis for the interactions between tenascins and the C-type lectin domains from lecticans: evidence for a cross-linking role for tenascins


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for interactions between tenascins and lectican C-type lectin domains: evidence for a crosslinking role for tenascins

Lundell, A.Olin, A.I.Moergelin, M.al-Karadaghi, S.Aspberg, A.Logan, D.T.

(2004) Structure 12: 1495-1506

  • DOI: 10.1016/j.str.2004.05.021

  • PubMed Abstract: 
  • The C-terminal G3 domains of lecticans mediate crosslinking to diverse extracellular matrix (ECM) proteins during ECM assembly, through their C-type lectin (CLD) subdomains. The structure of the rat aggrecan CLD in a Ca(2+)-dependent complex with fib ...

    The C-terminal G3 domains of lecticans mediate crosslinking to diverse extracellular matrix (ECM) proteins during ECM assembly, through their C-type lectin (CLD) subdomains. The structure of the rat aggrecan CLD in a Ca(2+)-dependent complex with fibronectin type III repeats 3-5 of rat tenascin-R provides detailed support for such crosslinking. The CLD loops bind Ca2+ like other CLDs, but no carbohydrate binding is observed or possible. This is thus the first example of a direct Ca(2+)-dependent protein-protein interaction of a CLD. Surprisingly, tenascin-R does not coordinate the Ca2+ ions directly. Electron microscopy confirms that full-length tenascin-R and tenascin-C crosslink hyaluronan-aggrecan complexes. The results are significant for the binding of all lectican CLDs to tenascin-R and tenascin-C. Comparison of the protein interaction surface with that of P-selectin in complex with the PGSL-1 peptide suggests that direct protein-protein interactions of Ca(2+)-binding CLDs may be more widespread than previously appreciated.


    Organizational Affiliation

    Department of Molecular Biophysics, Lund University, Box 124, S-221 00 Lund, Sweden.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tenascin-R
A
283Rattus norvegicusMutation(s): 0 
Gene Names: Tnr
Find proteins for Q05546 (Rattus norvegicus)
Go to UniProtKB:  Q05546
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Aggrecan core protein
B
130Rattus norvegicusMutation(s): 0 
Gene Names: Acan (Agc, Agc1)
Find proteins for P07897 (Rattus norvegicus)
Go to UniProtKB:  P07897
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.209 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 112.520α = 90.00
b = 86.420β = 90.00
c = 57.600γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
MOSFLMdata reduction
REFMACrefinement
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-31
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.3: 2018-03-07
    Type: Data collection